| 黄河粗沙区沙棘柔性坝拦沙效应与数学模拟 |
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| 引用本文： | 王新奇,杨方社,张日俊.黄河粗沙区沙棘柔性坝拦沙效应与数学模拟[J].西安文理学院学报,2008,11(3):94-98. |
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| 作者姓名： | 王新奇 杨方社 张日俊 |
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| 作者单位： | [1]西安文理学院学报编辑部,陕西西安710065 [2]西安理工大学水利水电学院,陕西西安710048 [3]西北大学城市与资源学系,陕西西安710069 |
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| 基金项目： | 西安文理学院校科研和教改项目 |
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| 摘 要： | 针对沙棘植物“柔性坝”的拦粗淤细作用，结合黄河粗沙区沟道侵蚀及泥沙输移的规律，开展了这方面的机理研究及野外拦沙保水试验，推导了沙棘植物柔性坝前壅水计算迭代公式．分析结果表明，沙棘植物坝具有良好的拦沙阻水作用，起到了滞流和增大入渗的作用；“柔性坝”可显著调节沟道土壤水分，提高水源涵养能力，对发展沟头林业和沟坡农业生产打下良好基础，而且可实现水沙分治．
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| 关 键 词： | 沙棘植物柔性坝 拦沙机理 壅水计算 Logistic型函数拟合 |
Sediment Intercepting Effect and Numerical Simulation of Sea - buckthorn Flexible Dam in Coarse Sand Area in Yellow River Basin |
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| WANG Xin-qi,YANG Fang-she,ZHANG Ri-jun.Sediment Intercepting Effect and Numerical Simulation of Sea - buckthorn Flexible Dam in Coarse Sand Area in Yellow River Basin[J].Journal of Xi‘an University of Arts & Science:Natural Science Edition,2008,11(3):94-98. |
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| Authors: | WANG Xin-qi YANG Fang-she ZHANG Ri-jun |
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| Institution: | WANG Xin-qi, YANG Fang-she, ZHANG Ri-jun (1. Editorial Board, Xi＇an University of Arts and Seienee, Xi＇an 710065, China; 2. School of Water Resources and Hydro - electric Engineering, Xi＇ an University of Teehnology, Xi＇ an 710048, China ; 3. Department of Urban and Resource Science, Northwest University, Xi＇ an 710069, China) |
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| Abstract: | A prototype experiment on the cumulative effect of sea buckthorn plant flexible dam system upon sediment retention and water conservation in relation to sediment is subject to a natural selection-intercepting coarse sediment particles and depositing fine sediment particles by using the ＂flexible dams＂ , and combined with the law of gully erosion as well as sediment transportation in coarse - sediment producing area of Yellow River Basin, the formula of before the dam backwater calculation is deduced. The results show that the sea buckthorn plant dam has better effect of sediment intercepting and preventing water as well as postponing water flow and extending water recharge. The sea-buckthorn plant flexible dam can distinctly regulate soil water in the gully channel, and can improve the effects of conserving water. A better foundation is laid for the forestry and agriculture in the gully channel, and river and sediment control can be realized respectively. |
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| Keywords: | sea - buckthorn plant flexible dam sediment intercepting mechanism backwater calculation fitting in Logistic function |
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